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What are row level and statement level triggers?
The FOR EACH ROW option determines whether the trigger is a row trigger or a statement trigger. If you specify FOR EACH ROW, then the trigger fires once for each row of the table that is affected by the triggering statement. The absence of the FOR EACH ROW option indicates that the trigger fires only once for each applicable statement, but not separately for each row affected by the statement.
How many trigger can have on one table?
In Oracle Database, a table can have multiple triggers associated with it. However, each trigger can be of a specific type: row-level trigger (BEFORE or AFTER each row affected) or statement-level trigger (BEFORE or AFTER each SQL statement executed). It is important to manage triggers carefully to avoid any performance issues or conflicts.
Difference row level and statement level triggers?
1) row level triggers can be identified by FOR EACH ROW is declared in the trigger declaration row level trigger is fired internally when any DML operation is occur in in any object like table it will fire for each row example: if any delete statement is occured for 30 records it will fire for 30 times. 2) Statement level triggers without declartion of FOR EACH ROW is statement level trigger is fired for every completion of statement example delete statement is occured for 3o records it will fire after the 3o records have been done
What is a trigger in dbms?
Trigger is a statement that is automatically executed by the system as a side effect of a modification to the database. Several existing systems have their own non standard trigger functions. For a trigger we need to specify the condition under which the trigger is executed.
Difference between level trigger and edge trigger filp fliop?
in level trigger mode, the input signal is sampled when the clock signal is either high or low whereas in edge trigger mode the input signal is sampled at rising or at the falling edge. lever triggering is sensitive to glitches whereas edge trigger is non sensitive.. example: latch for level trigger and flip-flop for edge trigger
What is pressure trigger?
A pressure trigger is a trigger for initiating assisted ventilation. A pressure trigger consists of a measuring pressure and starting assisted ventilation when the pressure reaches the desired level.
How do trigger the switch on plankton's fun house level 6?
Just try to push blocks into the trigger{
How the unstable waves stables in oscilloscope?
Unstable waves can be stabilized on an oscilloscope by adjusting the trigger level and trigger slope settings. By setting the trigger level to a specific voltage and selecting the appropriate trigger slope (rising or falling edge), the oscilloscope will only display the waveform when it meets these trigger conditions, helping to stabilize the display of the waveform.
What is a Trigger in MySQL Define different types of Trigger?
A trigger is a named database object that is associated with a table, and that activates when a particular event occurs for the table. Some uses for triggers are to perform checks of values to be inserted into a table or to perform calculations on values involved in an update. A trigger is associated with a table and is defined to activate when an INSERT,DELETE, or UPDATE statement for the table executes. A trigger can be set to activate either before or after the triggering statement. For example, you can have a trigger activate before each row that is deleted from a table or after each row that is updated. Sender : Yugant khokhar
How do you get chrono back in chrono trigger?
you get to level 99 and have 99 items
What are edge triggered and level triggered interrupts?
in the case of edge trigger, it may generate unwanted interrupt when input signal has glitch and so on. on the other hand if edge trigger not seen in some special situation (eg. when process in the service routin) level trigger preffered!
How the program statement and code are related?
A statement in your program is part of the code. In a low-level programming language, a statement will map directly to a single CPU instruction. In a high-level programming language, a statement is the smallest element of the language's syntax.
